Author:

First experiments for laser-gas plasma interaction about electron
acceleration have been performed with 30 fs, 100 TW relativistic Ti:Sapphier
laser pulse interaction with long slit (\textit{1.2 x 10 mm}$^{2})$ gas plasmas. The world
record \textit{10 mm} length plasma channel formed that was longer than 20 times the
Rayleigh length. Plasma density was the key factor for this long channel
stimulation under \textit{100 TW} laser pulse irradiation that was much higher than
critical power for relativistic self-focusing. For the first time, channel
characteristics such as laser bending, hosing and cavity formation were
demonstrated experimentally. In case of long channel guiding, accelerated
electron bunch was tightly collimated with low emmitance \textit{$$ 1 MeV} was \textit{$\sim $ 10 nC/shot} which was highest value
in laser accelerator, to our knowledge, and ascribed to the contribution of
long plasma channel.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.N43.12